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/******************************************************************************
* *
* easycap_testcard.c *
* *
******************************************************************************/
/*
*
* Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
*
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*****************************************************************************/
#include "easycap.h"
/*****************************************************************************/
#define TESTCARD_BYTESPERLINE (2 * 720)
void
easycap_testcard(struct easycap *peasycap, int field)
{
int total;
int y, u, v, r, g, b;
unsigned char uyvy[4];
int i1, line, k, m, n, more, much, barwidth, barheight;
unsigned char bfbar[TESTCARD_BYTESPERLINE / 8], *p1, *p2;
struct data_buffer *pfield_buffer;
if (!peasycap) {
SAY("ERROR: peasycap is NULL\n");
return;
}
JOM(8, "%i=field\n", field);
switch (peasycap->width) {
case 720:
case 360: {
barwidth = (2 * 720) / 8;
break;
}
case 704:
case 352: {
barwidth = (2 * 704) / 8;
break;
}
case 640:
case 320: {
barwidth = (2 * 640) / 8;
break;
}
default: {
SAM("ERROR: cannot set barwidth\n");
return;
}
}
if (TESTCARD_BYTESPERLINE < barwidth) {
SAM("ERROR: barwidth is too large\n");
return;
}
switch (peasycap->height) {
case 576:
case 288: {
barheight = 576;
break;
}
case 480:
case 240: {
barheight = 480;
break;
}
default: {
SAM("ERROR: cannot set barheight\n");
return;
}
}
total = 0;
k = field;
m = 0;
n = 0;
for (line = 0; line < (barheight / 2); line++) {
for (i1 = 0; i1 < 8; i1++) {
r = (i1 * 256)/8;
g = (i1 * 256)/8;
b = (i1 * 256)/8;
y = 299*r/1000 + 587*g/1000 + 114*b/1000 ;
u = -147*r/1000 - 289*g/1000 + 436*b/1000 ;
u = u + 128;
v = 615*r/1000 - 515*g/1000 - 100*b/1000 ;
v = v + 128;
uyvy[0] = 0xFF & u ;
uyvy[1] = 0xFF & y ;
uyvy[2] = 0xFF & v ;
uyvy[3] = 0xFF & y ;
p1 = &bfbar[0];
while (p1 < &bfbar[barwidth]) {
*p1++ = uyvy[0] ;
*p1++ = uyvy[1] ;
*p1++ = uyvy[2] ;
*p1++ = uyvy[3] ;
total += 4;
}
p1 = &bfbar[0];
more = barwidth;
while (more) {
if ((FIELD_BUFFER_SIZE/PAGE_SIZE) <= m) {
SAM("ERROR: bad m reached\n");
return;
}
if (PAGE_SIZE < n) {
SAM("ERROR: bad n reached\n");
return;
}
if (0 > more) {
SAM("ERROR: internal fault\n");
return;
}
much = PAGE_SIZE - n;
if (much > more)
much = more;
pfield_buffer = &peasycap->field_buffer[k][m];
p2 = pfield_buffer->pgo + n;
memcpy(p2, p1, much);
p1 += much;
n += much;
more -= much;
if (PAGE_SIZE == n) {
m++;
n = 0;
}
}
}
}
return;
}
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